1.17 g of an impure sample of oxalic acid was dissolved and made up to 200mL with water. 10 mL of this solution in acid medium required 8.5 mL of a solution of potassium permanganate containing 3.16 g per litre of oxidation. Calculate the percentage purity of oxalic acid.

1.17 g of an impure sample of oxalic acid was dissolved and made up to

1.	1.17 g of an impure sample of oxalic acid was dissolved and made up to 200mL with water. 10 mL of this solution in acid medium required 8.5 mL of a solution of potassium permanganate containing 3.16 g per litre of oxidation. Calculate the percentage purity of oxalic acid.
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